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公开(公告)号：US5639285A
公开(公告)日：1997-06-17
申请号：US440773
申请日：1995-05-15
CPC分类号： C04B35/5831 , C09K3/1436 , C22C26/00 , Y10T428/2991 , Y10T428/2993
摘要： A polycrystalline cubic boron nitride cutting tool is from 50 to 85% by weight cubic boron nitride crystals bonded together as a polycrystalline mass. A supporting phase commingled with the polycrystalline cubic boron nitride is made from 15 to 40% by weight of a refractory material which is preferably titanium carbonitride or titanium aluminum carbonitride. The starting composition also comprises from 4 to 10% by weight of Co.sub.2 Al.sub.9. Mixed powders of these ingredients are treated in ammonia at a temperature in the range of from 1000.degree. to 1250.degree. C., which significantly increases the nitrogen content and reduces carbon content of titanium carbonitride. Instead of mixed powders of the starting materials, coated particles may be used such as cubic boron nitride coated with titanium carbonitride, or titanium carbonitride coated with cobalt, aluminum or cobalt aluminide. Hexagonal boron nitride may be substituted as a starting material for a portion of the cubic boron nitride.
摘要翻译： 多晶立方氮化硼切割工具是以多晶体结合在一起的50至85重量％的立方氮化硼晶体。 与多晶立方氮化硼混合的支撑相由15至40重量％的耐火材料制成，耐火材料优选为碳氮化钛或碳氮化钛铝。 起始组合物还包含4至10重量％的Co 2 Al 9。 这些成分的混合粉末在氨水中在1000〜1250℃的温度范围内处理，显着提高了氮含量，降低了碳氮化钛的碳含量。 代替起始材料的混合粉末，可以使用涂覆的颗粒，例如涂覆有碳氮化钛的立方氮化硼或涂覆有钴，铝或钴铝的碳氮化钛。 六方氮化硼可以被取代为一部分立方氮化硼的起始材料。
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公开(公告)号：US5830813A
公开(公告)日：1998-11-03
申请号：US792959
申请日：1997-01-22
IPC分类号： B23B27/14 , B24D3/00 , B24D18/00 , C04B35/5831 , C09K3/14 , C22C26/00 , C04B35/5835
CPC分类号： C04B35/5831 , C09K3/1436 , C22C26/00 , Y10T428/2991 , Y10T428/2993
摘要： A polycrystalline cubic boron nitride cutting tool is from 50 to 85% by weight cubic boron nitride crystals bonded together as a polycrystalline mass. A supporting phase commingled with the polycrystalline cubic boron nitride is made from 15 to 40% by weight of a refractory material which is preferably titanium carbonitride or titanium aluminum carbonitride. The starting composition also comprises from 4 to 10% by weight of Co.sub.2 Al.sub.9. Mixed powders of these ingredients are treated in ammonia at a temperature in the range of from 1000.degree. to 1250.degree. C., which significantly increases the nitrogen content and reduces carbon content of titanium carbonitride. Instead of mixed powders of the starting materials, coated particles may be used such as cubic boron nitride coated with titanium carbonitride, or titanium carbonitride coated with cobalt, aluminum or cobalt aluminide. Hexagonal boron nitride may be substituted as a starting material for a portion of the cubic boron nitride.
摘要翻译： 多晶立方氮化硼切割工具是以多晶体结合在一起的50至85重量％的立方氮化硼晶体。 与多晶立方氮化硼混合的支撑相由15至40重量％的耐火材料制成，耐火材料优选为碳氮化钛或碳氮化钛铝。 起始组合物还包含4至10重量％的Co 2 Al 9。 这些成分的混合粉末在氨水中在1000〜1250℃的温度范围内处理，显着提高了氮含量，降低了碳氮化钛的碳含量。 代替起始材料的混合粉末，可以使用涂覆的颗粒，例如涂覆有碳氮化钛的立方氮化硼或涂覆有钴，铝或钴铝的碳氮化钛。 六方氮化硼可以被取代为一部分立方氮化硼的起始材料。
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公开(公告)号：US5833021A
公开(公告)日：1998-11-10
申请号：US615860
申请日：1996-03-12
申请人： Graham Mensa-Wilmot , Ghanshyam Rai , Madapusi K. Keshavan , David Truax , Kuttaripalayam T. Kembaiyan
发明人： Graham Mensa-Wilmot , Ghanshyam Rai , Madapusi K. Keshavan , David Truax , Kuttaripalayam T. Kembaiyan
IPC分类号： E21B10/54 , E21B10/55 , E21B10/56 , E21B10/567 , E21B10/46
CPC分类号： E21B10/55 , E21B10/567
摘要： A polycrystalline diamond cutter having a coating of refractory material applied to the polycrystalline diamond surface increases the operational life of the cutter. The coating typically has a thickness in the range of from 0.1 to 30 .mu.m and may be made from titanium nitride, titanium carbide, titanium carbonitride, titanium aluminum carbonitride, titanium aluminum nitride, boron carbide, zirconium carbide, chromium carbide, chromium nitride, or any of the transition metals or Group IV metals combined with either silicon, aluminum, boron, carbon, nitrogen or oxygen. The coating can be applied using conventional plating or other physical or chemical deposition techniques.
摘要翻译： 具有施加到多晶金刚石表面的耐火材料涂层的多晶金刚石切割器增加了切割器的使用寿命。 涂层通常具有0.1-30μm的厚度，并且可以由氮化钛，碳化钛，碳氮化钛，碳氮化钛铝，氮化铝钛，碳化硼，碳化锆，碳化铬，氮化铬， 或与硅，铝，硼，碳，氮或氧结合的任何过渡金属或IV族金属。 可以使用常规电镀或其他物理或化学沉积技术来涂覆涂层。
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公开(公告)号：US5766394A
公开(公告)日：1998-06-16
申请号：US568276
申请日：1995-12-06
IPC分类号： B24D3/00 , B24D3/06 , B24D3/28 , B24D18/00 , B32B18/00 , C04B41/87 , C04B41/89 , B32B31/26 , B22F1/00 , B22F3/14
CPC分类号： B24D18/0009 , B24D3/06 , B24D3/28 , Y10S76/11 , Y10S76/12 , Y10T156/1067 , Y10T156/1075
摘要： A polycrystalline diamond layer is bonded to a cemented metal carbide substrate by this process. A layer of dense high shear compaction material including diamond or cubic boron nitride particles is placed adjacent to a metal carbide substrate. The particles of diamond have become rounded instead of angular due to high shear compaction in a multiple roller process. The volatiles in the high shear compaction material are removed and binder decomposed at high temperature, for example, 950.degree. C., leaving residual amorphous carbon or graphite in a layer of ultra hard material particles on the carbide substrate. The substrate and layer assembly is then subjected to a high pressure, high temperature process, thereby sintering the ultra hard particles to each other to form a polycrystalline ultra hard layer bonded to the metal carbide substrate. The layer of high shear compaction material is also characterized by a particle size distribution including larger and smaller particles that are distributed uniformly throughout the layer.
摘要翻译： 通过该方法将多晶金刚石层结合到胶结金属碳化物基底。 将包括金刚石或立方氮化硼颗粒的致密高剪切压实材料层放置在与金属碳化物基底相邻的位置。 由于多辊工艺中的高剪切压实，金刚石颗粒已经变圆而不是角度。 除去高剪切压实材料中的挥发物，并在高温例如950℃下分解粘合剂，在碳化物基体上留下残留的无定形碳或石墨的超硬材料颗粒层。 然后将基板和层组件进行高压高温处理，从而将超硬颗粒彼此烧结以形成结合到金属碳化物基底的多晶超硬层。 高剪切压实材料层的特征还在于粒度分布包括均匀分布在整个层中的越来越小的颗粒。
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公开(公告)号：US5780139A
公开(公告)日：1998-07-14
申请号：US715437
申请日：1996-09-18
CPC分类号： B30B11/004 , B01J3/067 , B22F5/007 , B30B15/065 , Y10T428/24983 , Y10T428/252 , Y10T428/31678
摘要： An anvil for use in ultra high pressure presses capable of operating in the pressure ranges where diamonds, polycrystalline diamond composites and cubic boron nitride are stable, fabricated by diffusion bonding together a plurality of cemented tungsten carbide layers. The anvil has a working layer adjacent to the highest pressure of the press with the remaining plurality of layers behind the working layer for support. The working layer has a higher hardness than the supporting layers and the supporting layers each have higher toughness than the working layer.
摘要翻译： 用于能够在金刚石，多晶金刚石复合材料和立方氮化硼稳定的压力范围内工作的超高压压机的砧座通过将多个胶结碳化钨层扩散结合在一起而制造。 砧座具有与压力机的最高压力相邻的工作层，在工作层后面的剩余的多个层用于支撑。 工作层具有比支撑层更高的硬度，并且支撑层各自具有比工作层更高的韧性。
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公开(公告)号：US5326380A
公开(公告)日：1994-07-05
申请号：US966698
申请日：1992-10-26
申请人： Xian Yao , Ghanshyam Rai
发明人： Xian Yao , Ghanshyam Rai
IPC分类号： C04B35/583 , B24D3/06 , C04B35/5831 , C22C26/00 , B24D3/00
CPC分类号： C22C26/00 , B24D3/06 , C04B35/5831 , C22C2026/005
摘要： A sintered polycrystalline compact of cubic boron nitride is made by first forming a mixture of about 30 to 60 percent by weight cubic boron nitride, up to about 50 percent by weight hexagonal boron nitride, and from about 2 to 7 percent by weight adjuvant materials, or sintering aids, comprising an aluminum containing material selected from the group consisting of aluminum, aluminum nitride, or aluminum diboride, and up to 50 percent by weight of nitride, carbide, or carbonitride binder material containing a group IVb, Vb, or VIb transition metal. The mixture of cBN crystals, hBN and other materials is compacted into a preform and subjected to heat treatment in a non-oxidizing atmosphere. The preform is placed onto a cemented tungsten-carbide/cobalt substrate and subjected to elevated pressure and temperature conditions at which cubic boron nitride is thermodynamically stable. The elevated pressure and temperature conditions are maintained for a time sufficient to permit the infiltration of the cobalt into the cBN matrix and sinter the compact. The compact is characterized by substantial intergranular cBN to cBN bonding, and has superior abrasive wear stability, chemical resistance, impact resistance and thermal conductivity.
摘要翻译： 通过首先形成约30至60重量％的立方氮化硼，至多约50重量％的六方氮化硼和约2至7重量％的辅助材料的混合物来制备立方氮化硼的烧结多晶压块， 或烧结助剂，其包含选自铝，氮化铝或二硼化铝的含铝材料，以及含有IVb，Vb或VIb族转变率的至多50重量％的氮化物，碳化物或碳氮化物粘合剂材料 金属。 将cBN晶体，hBN和其他材料的混合物压实成预成型体，并在非氧化性气氛中进行热处理。 将预成型件放置在粘结的碳化钨/钴基底上，并经受立方氮化硼在热力学上稳定的升高的压力和温度条件。 保持升高的压力和温度条件足以允许钴渗透到cBN基体中并烧结该压块的时间。 该压坯的特征在于晶粒间的cBN至cBN结合，并且具有优异的磨料磨损稳定性，耐化学性，耐冲击性和导热性。
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公开(公告)号：US5858525A
公开(公告)日：1999-01-12
申请号：US874769
申请日：1997-06-13
申请人： Lan Carter , Xian Yao , Ghanshyam Rai
发明人： Lan Carter , Xian Yao , Ghanshyam Rai
CPC分类号： B30B11/004 , B01J3/06 , B30B11/007 , Y10T428/252 , Y10T428/256 , Y10T428/257 , Y10T428/259 , Y10T428/26
摘要： A synthetic gasket material for use in a high-pressure press includes a major proportion of clay mineral powder having sufficient lubricity to flow in a high-pressure press, a minor proportion of at least one hard material powder having a sufficiently greater hardness than the clay mineral to retard flow of the clay mineral and form a seal during pressing in a high-pressure press, and a sufficient amount of binder to form an integral body. The synthetic gasket material is formed by thoroughly mixing together in desired proportions the clay mineral, hard material, and binder. The mixture is compacted into a body near net geometry and having a desired configuration to facilitate use in the high-pressure press. The compacted body is heated for a sufficient time and at a sufficient temperature to remove non-crystallographic water. A synthetic gasket material prepared according to principles of this invention displays improved flow, pressure transmitting, and thermal insulating properties when compared with gasket material made from natural pyrophyllite, due to the improved compositional consistency, i.e., lack of impurities and consistently low moisture content, of the synthetic gasket material.
摘要翻译： 用于高压压机的合成垫圈材料包括主要部分的粘土矿物粉末具有足够的润滑性以在高压压力机中流动，少量的至少一种硬质材料粉末具有比粘土足够大的硬度 矿物，以阻止粘土矿物的流动并在高压压机中压制期间形成密封，以及足够量的粘合剂以形成整体。 合成垫片材料通过以所需比例将粘土矿物，硬质材料和粘合剂充分混合在一起形成。 混合物被压实成靠近网状几何体的本体，并且具有期望的构造以便于在高压压机中使用。 将压实体加热足够的时间并在足够的温度下除去非结晶水。 根据本发明原理制备的合成垫圈材料与天然叶蜡石制成的垫圈材料相比，显示出改进的流动性，压力传递和绝热性能，这是由于改进的组合物一致性，即缺乏杂质和始终如一的低含水量， 的合成垫片材料。
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公开(公告)号：US5271749A
公开(公告)日：1993-12-21
申请号：US970822
申请日：1992-11-03
申请人： Ghanshyam Rai , Xian Yao
发明人： Ghanshyam Rai , Xian Yao
CPC分类号： C22C29/16 , B24D3/06 , C04B35/5831 , C22C26/00 , B22F2998/00 , C22C2026/005
摘要： A sintered polycrystalline compact of cubic boron nitride is made by forming a mixture of about 45 to 65 percent by weight cubic boron nitride (cBN), from about 30 to 45 percent by weight hexagonal boron nitride (hBN), and from about 2 to 7 percent by weight an aluminum containing material, preferably aluminum nitride, and cobalt aluminide having a melting temperature lower than the melting temperature of cobalt phase. The mixture of cBN crystals, hBN and adjuvant materials is compacted into preforms and subjected to heat treatment in a non-oxidizing atmosphere. The preforms are placed onto a cemented tungsten carbide substrate containing cobalt and subjected to elevated pressure and temperature conditions at which the boron nitride is thermodynamically stable. The elevated pressure and temperature conditions are maintained for a time sufficient to permit the infiltration of a cobalt phase into the cBN matrix and sinter the compact. Typically, the cobalt phase is infiltrated from a tungsten carbide substrate cemented with cobalt phase. The compact is characterized by substantial intercrystalline cBN to cBN bonding, and has superior abrasive wear resistance, chemical resistance, impact resistance, thermal conductivity and stability. Further, the technique produces a sintered cBN compact that can be machined more efficiently by EDM.
摘要翻译： 通过形成约45至65重量％的立方氮化硼（cBN），约30至45重量％的六方氮化硼（hBN）和约2至7个的混合物制备立方氮化硼的烧结多晶压块 重量百分比含有铝的材料，优选氮化铝，和钴的熔化温度低于钴相的熔融温度。 将cBN晶体，hBN和辅助材料的混合物压实成预制件，并在非氧化气氛中进行热处理。 将预型件放置在含有钴的粘结碳化钨基材上，并经受高压和高温条件，在该条件下氮化硼在热力学上是稳定的。 保持升高的压力和温度条件足以允许钴相渗透到cBN基体中并烧结该压块的时间。 通常，钴相从用钴相粘合的碳化钨基底渗透。 该压坯的特征在于大量的晶间cBN至cBN键合，并且具有优异的耐磨性，耐化学性，耐冲击性，导热性和稳定性。 此外，该技术产生可以通过EDM更有效地加工的烧结cBN压块。
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公开(公告)号：US06361873B1
公开(公告)日：2002-03-26
申请号：US09499929
申请日：2000-02-08
申请人： Zhou Yong , Sujian J. Huang , Michael A. Siracki , Chris Cawthorne , J. Albert Sue , Ghanshyam Rai , Zhigang Fang
发明人： Zhou Yong , Sujian J. Huang , Michael A. Siracki , Chris Cawthorne , J. Albert Sue , Ghanshyam Rai , Zhigang Fang
IPC分类号： B22F300
CPC分类号： E21B10/567 , B22F7/06 , B22F2005/001 , B24D3/06 , B24D99/005 , C22C26/00 , C22C49/00 , C22C2204/00 , E21B10/52 , E21B10/56 , E21B10/5676 , Y10T428/30
摘要： Composite constructions of this invention comprise an ordered microstructure made up of multiple structural units that can be the same or different, and that comprise at least a first structural phase and a second structural phase. The first structural phase comprises a hard material that is selected from the group consisting of cermet materials, PCD, PCBN and mixtures thereof. The second structural phase is in contact with the first phase and comprises a material that is different than that selected to form the first structural phase. Additionally, the second structural phase is in contact with at least a portion of the first structural phase. Composite constructions of this invention can also have a multi-layer structures comprising two or more layers, wherein at least one of the layers comprises a composite construction having an ordered microstructure made up of the multiple structural units described above.
摘要翻译： 本发明的复合结构包括由相同或不同的多个结构单元构成的并且包括至少第一结构相和第二结构相的有序微结构。 第一结构相包括选自金属陶瓷材料，PCD，PCBN及其混合物的硬质材料。 第二结构相与第一相接触并且包括不同于选择以形成第一结构相的材料。 另外，第二结构相与第一结构相的至少一部分接触。 本发明的复合结构还可以具有包括两层或更多层的多层结构，其中至少一层包括具有由上述多个结构单元构成的有序微结构的复合结构。
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公开(公告)号：US5697994A
公开(公告)日：1997-12-16
申请号：US440772
申请日：1995-05-15
CPC分类号： C23C30/005 , C22C26/00 , Y10T428/26 , Y10T428/263 , Y10T428/30
摘要： A cutting tool for woodworking applications has a tungsten carbide substrate and a hard layer bonded to the substrate at high temperature and high pressure, i.e. where diamond or cubic boron nitride is thermodynamically stable. The hard layer comprises polycrystalline diamond or polycrystalline cubic boron nitride, and a supporting cobalt phase including adjuvant alloying materials for providing oxidation and corrosion resistance. Typical alloying elements include nickel, aluminum, silicon, titanium, molybdenum and chromium. Such materials also retard transformation of cobalt from the HCP to the FCC crystal structure at high temperature. The hard layer has an as-pressed surface parallel to the substrate and is only about 0.3 millimeters thick. An additional secondary phase including a carbide, nitride and carbonitride of metals such as titanium may also be present in the PCD or PCBN layer.
摘要翻译： 用于木工应用的切削工具具有碳化钨基底和在高温高压下与基底结合的硬质层，即金刚石或立方氮化硼在热力学上是稳定的。 硬层包括多晶金刚石或多晶立方氮化硼，以及包含用于提供抗氧化和耐腐蚀性的佐剂合金材料的支撑钴相。 典型的合金元素包括镍，铝，硅，钛，钼和铬。 这种材料还可以阻止钴在高温下从HCP向FCC晶体结构转变。 硬层具有平行于基底的压制表面，并且仅约0.3毫米厚。 包括金属如钛的碳化物，氮化物和碳氮化物的另外的第二相也可以存在于PCD或PCBN层中。
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